iFans, in collaboration with our community, has already discovered over 90 of the newest features that you can expect from iOS 5 in Fall 2011. Apple cited that there are over 200 new features in iOS 5 at the WWDC 2011 keynote, but only took time to show off 10 key features. There’s still a lot of new things that have yet to be discovered, so we’ll update this post as soon as we find any of these unmentioned features—big or small. If there’s a feature in iOS 5 that isn’t found in the list below, feel free to share about it in the comments.

Major Features

New Notification System (Notification Center) – drop-down menu

Improved in-app notifications at the top

Lock screen notifications

Choose what notification type you want for each app (banner notifications or the classic pop-up notifications)

Sort notifications in any order, or based by their time

iCloud support & integration

iMessage – send text messages to other iOS users via Wi-Fi or 3G

Newsstand – looks like iBooks, stores your App Store subscriptions

Reminders – Apple’s official to-do app, includes calendars

Twitter Integration – i.e. in Safari, Photos, Maps, etc.

AirPlay Mirroring for iPad 2s (on HDTVs, etc.)

Camera

Shutter Button – volume up button can be used to take pictures

Lock Screen Button – double tap the home button & you can open the Camera from the lock screen

Camera Grids – For easier & more precise photography

Pinch-to-Zoom Gestures

AE & AF Lock

Single-tap Focus and Exposure

Swipe left to reveal your camera roll

Photos

Crop photos

Enhance photos

Rotate photos

Remove red-eye in-app

Photo Stream – part of iCloud, this sends photos to all of your iOS devices automatically

Photos can be organized in Camera Roll

Safari

iPad & iPad 2 Only: Tabbed Browsing

Safari Reader – read webpage or blog articles without ads, clutter

Safari Reading List – save webpages for later, offline reading

Improved Performance

Private Browsing – browser turns black

Individual Site Data can be deleted

“PC Free” / Wireless Features / iCloud

Setup your iOS device on-screen, no Mac or PC required

Over-The-Air (OTA) iOS Software Updates

Delta Software Updates – installs only the updated portions of iOS, rather than a complete download

Wi-Fi Sync – wirelessly sync your iOS device with a Mac or PC

Restore from iCloud

Wirelessly sync Exchange tasks

Ability to see apps you’ve downloaded from the App Store, even if they’re on another iOS device (downloads tab)

Mail

Rich Text Formatting (Bold, Italics, Underline, etc.)

Improved Offline Support

Indentation Control

Address fields can be dragged and rearranged (To, CC, BCC)

Search Within an Email

Flag Emails

S/MIME Security

Game Center

Add a profile picture

Friend recommendations

Game recommendations

View “friends of friends” lists

Find and purchase new apps – integrated App Store functionality

Achievement points

You can now play turn-based games with other iOS users

New Multitasking Gestures (iPad & iPad 2)

Each multitasking gestures requires using 4 or 5 fingers.

Swipe up to reveal the multitasking bar

Swipe left or right to switch between apps that are open

Pinch to return to the home screen

New Keyboard Features

New keyboard/typing shortcuts under Settings > General > Keyboard. For example, OMG can be setup to be replaced by OH MY GOSH)

Emoji Emoticons Keyboard (to be enabled via Keyboard in Settings?)

Accessibility & Usability

iPhone 4: LED Flash for Incoming Calls & Alerts

Custom Vibration for Incoming Calls

VoiceOver improvements, including custom element labeling

Set Custom Tones for Calendars, Mail, and Voicemail

Accessible Input for Mobility

Calendar

iPad & iPad 2: Year View

iPhone & iPod touch: Week View (in landscape mode)

Switch to Japanese or Buddhist calendars

Music & Videos

iPad & iPad 2: Redesigned music application

iPhone: The iPod application is separated into two apps for music & video